You totally could do that with the eye tracking device! In fact, modern fighter jets like the F22 and F35 use eye tracking as a much better missile lock platform than laser/infrared/radar/tv guided, so it would add to a realistic flight sim as well. The accuracy of the EyeX device is accurate to about an inch of where you're looking at on the screen, so it is quite capable in that role.

Edit: I'm not sure how to set it up to work with Elite or other games. I use the rift in Elite 99% of the time. From my experience the game needs to be coded to use the device's SDK specifically.

I would love to see eye tracking implemented in the Oculus Rift. It would be a huge help to use it as a control input in the rift. It will also solve a rendering bug in the Rift - https://www.youtube.com/watch?v=SC9vbV-zjBk

I own a Tobii EyeX Eye Controller and I have made a small game using the device. I'd be happy to answer any questions. With my time spent using it your eyes are a very easy to use natural controller.

There are more interesting games out there that use eye tracking as a natural second controller or use eye tracking in other innovative ways. Imagine have npcs in a RPG react to you when you check out their bodies in certain areas. Their eye controller can even tell when you blink or close both eyes. Assassin's Creed just scratched the surface of eye tracking.

My owl familiar in D&D got possessed thursday night in my weekly 5th edition D&D game. We just killed a mind flayer and looted a magical mace. It was a good rest point so I decided to identify it. My DM asked how I went about identifying it, which was odd. I've known him for a year now and hes never ever asked me to detail how I went about identifying things. "How do you go about identifying it? Do you touch it? Do you pick it up?" He had a huge tell.

I quickly on the spot said I have my familiar deliver touch spells, and identify is a touch spell. I do this for every identify. I never risk touching any unknown item until I can determine its properties.

He was like good. It is a cursed +1 mace that compels whoever touches it to follow the mace's orders. It is now compelling your owl into a rage and to attack any enemies you encounter in this dungeon. Your owl now gains proficiency with maces while it is wielded. On a successful hit the mace will cast either suggestion(3 charges) or command(1 charge), your choice.

The whole party found it hilarious. The owl would rage in every combat to swing at the enemy and even got a successful suggestion off once. It was more than for the DM to handle as the owl used its flyby ability to move back from the enemy and prevent an attack of opportunity against it. One party member said someone should draw my owl, so I took the opportunity to do a quick sketch during the night. :)